This PR is for issue: https://github.com/envoyproxy/envoy/issues/32090.
One of the use case is, like compression by the external processing.
This is to let the ext_proc server be able to buffer M request body
chunks from Envoy first, processing them, then send N chunks back to
Envoy in the STREAMED mode. It also let the server buffer the entire
message, i.e, header, body, trailer, before sending back any response.
The ext_proc MXN streaming works this way:
1) Enable the MXN streaming by configuring the body mode to be
FULL_DUPLEX_STREAMED in the ext_proc filter config.
2) Config the trailer mode to be SEND in the ext_proc filter config.
With above config, Envoy will send body to the ext_proc server as they
arrival. The server can buffer the entire or partial of the body (M
chunks) then streaming the mutated body(may need to split into N
chunks), back to Envoy.
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Signed-off-by: Yanjun Xiang <yanjunxiang@google.com>
Mirrored from https://github.com/envoyproxy/envoy @ 72a20671ae70db520226388bfd351e817393d66e
update-envoy[bot]
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